> ## Documentation Index > Fetch the complete documentation index at: https://docs.ngnmarket.com/llms.txt > Use this file to discover all available pages before exploring further. # Historical price series > Returns the complete OHLCV (open, high, low, close, volume) history for a company sourced from daily exchange data. Each data point includes a Unix timestamp, calendar date, and full OHLCV fields plus VWAP, trade count, and daily change. Use `format=chart` for compact `[timestamp, close]` pairs or `format=ohlcv` for candlestick-ready `[timestamp, open, high, low, close, volume]` arrays. **Plan required:** Hobby ## OpenAPI ````yaml get /companies/{symbol}/chart openapi: 3.1.0 info: title: NGN Market API version: '1.0' description: > The NGN Market API provides programmatic access to Nigerian Exchange Group (NGX) market data, including equities, forex rates, company profiles, indices, bonds, and financial news. ## Base URL All endpoints are served from: ``` https://api.ngnmarket.com/v1 ``` ## Authentication Every request requires a Bearer token in the `Authorization` header: ``` Authorization: Bearer ngm_live_YOUR_KEY ``` Generate and manage your API keys from the [developer dashboard](https://ngnmarket.com/developer). ## Plans & Quotas | Plan | Monthly Calls | Requests/min | Price | | :--- | ---: | ---: | :--- | | Free | 3,000 | 30 | Free | | Hobby | 10,000 | 60 | ₦15,000/mo | | Starter | 100,000 | 120 | ₦50,000/mo | | Growth | 500,000 | 200 | ₦200,000/mo | | Business | 2,000,000 | 300 | ₦700,000/mo | | Enterprise | Unlimited | Unlimited | Custom | Every response includes a `meta` object showing your current usage and remaining quota. Exceeding the per-minute rate limit returns `429 RATE_LIMITED`. Exceeding the monthly quota returns `429 QUOTA_EXCEEDED`. ## Response Envelope All responses use a consistent JSON envelope: ```json { "success": true, "data": { ... }, "meta": { "plan": "starter", "calls_used": 4821, "calls_remaining": 95179, "reset_at": "2026-05-01T00:00:00.000Z" } } ``` contact: name: NGN Market Support email: support@ngnmarket.com url: https://ngnmarket.com license: name: Proprietary servers: - url: https://api.ngnmarket.com/v1 description: Production security: - BearerAuth: [] tags: - name: Market description: >- Daily market snapshots, top trades, movers, market breadth, sectors, and YTD performers. - name: Companies description: >- Browse, search, and retrieve profiles, price charts, and financial statements for NGX-listed companies. - name: Forex description: Current and historical NGN exchange rates against major currencies. - name: Indices description: >- All NGX market indices, including list, detail with constituents, and historical chart data. - name: ETFs description: >- NGX-listed Exchange Traded Funds and ETPs — list, full fund detail, and historical daily price data. - name: Bonds description: >- NGX-listed bond instruments with issuer details, coupon rates, and maturity dates. - name: Disclosures description: >- Official corporate filings from NGX-listed companies (financial statements, AGM notices, board meetings, director dealings, earnings forecasts). Sourced from NGX Group and updated twice daily. - name: Blog description: >- Published NGN Market blog posts. List, search, and filter by category or company. - name: Dividends description: >- Market-wide NGX dividend calendar. Browse upcoming and recently paid dividends across all listed companies with optional search and pagination. - name: Account description: >- Quota status, 30-day request analytics, and paginated request logs for the authenticated user. paths: /companies/{symbol}/chart: get: tags: - Companies summary: Historical price series description: > Returns the complete OHLCV (open, high, low, close, volume) history for a company sourced from daily exchange data. Each data point includes a Unix timestamp, calendar date, and full OHLCV fields plus VWAP, trade count, and daily change. Use `format=chart` for compact `[timestamp, close]` pairs or `format=ohlcv` for candlestick-ready `[timestamp, open, high, low, close, volume]` arrays. **Plan required:** Hobby operationId: getCompanyChart parameters: - name: symbol in: path description: NGX ticker symbol (e.g. `DANGCEM`). Case-insensitive. required: true schema: type: string example: DANGCEM - name: period in: query description: Preset lookback window. Ignored when `from`/`to` are supplied. required: false schema: type: string enum: - 7d - 30d - 90d - 1y - 5y - all - name: from in: query description: >- Start date in `YYYY-MM-DD` format (inclusive). Takes priority over `period`. required: false schema: type: string format: date example: '2026-01-01' - name: to in: query description: End date in `YYYY-MM-DD` format (inclusive). Use with `from`. required: false schema: type: string format: date example: '2026-04-17' - name: format in: query description: > Response shape for data points. - `detailed` (default): full objects with OHLCV, VWAP, and change fields. Includes `price` as an alias for `close` for backward compatibility. - `chart`: compact `[timestamp, close]` arrays — backward-compatible line chart format. - `ohlcv`: compact `[timestamp, open, high, low, close, volume]` arrays — use this for candlestick charts. required: false schema: type: string enum: - detailed - chart - ohlcv default: detailed responses: '200': description: Price chart data retrieved successfully. content: application/json: schema: allOf: - $ref: '#/components/schemas/SuccessEnvelope' - type: object properties: data: $ref: '#/components/schemas/CompanyChart' examples: detailedFormat: summary: Detailed format (default) value: success: true data: symbol: DANGCEM company_name: Dangote Cement Plc format: detailed period: 30d count: 2 data: - timestamp: 1744243200000 date: '2026-04-10' price: 295 open: 293 high: 297.5 low: 292 close: 295 volume: 3821000 value_traded: 1128270500 vwap: 295.28 trade_count: 289 change: -1.5 change_percent: -0.5063 source: historical - timestamp: 1744502400000 date: '2026-04-13' price: 302.5 open: 296 high: 303 low: 295.5 close: 302.5 volume: 5143000 value_traded: 1556300000 vwap: 302.54 trade_count: 412 change: 7.5 change_percent: 2.5423 source: historical statistics: first_price: 295 last_price: 302.5 min_price: 295 max_price: 302.5 price_change: 7.5 price_change_percent: 2.5423 start_date: '2026-04-10' end_date: '2026-04-13' meta: plan: starter calls_used: 4822 calls_remaining: 95178 reset_at: '2026-05-01T00:00:00.000Z' chartFormat: summary: Compact chart format — [timestamp, close] value: success: true data: symbol: DANGCEM company_name: Dangote Cement Plc format: chart period: 30d count: 2 data: - - 1744243200000 - 295 - - 1744502400000 - 302.5 statistics: first_price: 295 last_price: 302.5 min_price: 295 max_price: 302.5 price_change: 7.5 price_change_percent: 2.5423 start_date: '2026-04-10' end_date: '2026-04-13' meta: plan: starter calls_used: 4823 calls_remaining: 95177 reset_at: '2026-05-01T00:00:00.000Z' ohlcvFormat: summary: OHLCV format — [timestamp, open, high, low, close, volume] value: success: true data: symbol: DANGCEM company_name: Dangote Cement Plc format: ohlcv period: 30d count: 2 data: - - 1744243200000 - 293 - 297.5 - 292 - 295 - 3821000 - - 1744502400000 - 296 - 303 - 295.5 - 302.5 - 5143000 statistics: first_price: 295 last_price: 302.5 min_price: 295 max_price: 302.5 price_change: 7.5 price_change_percent: 2.5423 start_date: '2026-04-10' end_date: '2026-04-13' meta: plan: starter calls_used: 4824 calls_remaining: 95176 reset_at: '2026-05-01T00:00:00.000Z' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/PlanRequired' '404': description: No chart data available for this symbol. content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' example: success: false error: code: NOT_FOUND message: No chart data available for DANGCEM. '429': $ref: '#/components/responses/QuotaExceeded' '500': $ref: '#/components/responses/ServerError' components: schemas: SuccessEnvelope: type: object required: - success properties: success: type: boolean const: true meta: $ref: '#/components/schemas/Meta' CompanyChart: type: object properties: symbol: type: string company_name: type: string format: type: string enum: - detailed - chart - ohlcv description: >- `detailed` = full objects, `chart` = [timestamp, close], `ohlcv` = [timestamp, open, high, low, close, volume] period: type: string description: The period used for this request (e.g. "30d", "custom"). count: type: integer data: type: array description: > Shape varies by `format`. - `detailed`: array of objects with `timestamp`, `date`, `price` (alias for close), `open`, `high`, `low`, `close`, `volume`, `value_traded`, `vwap`, `trade_count`, `change`, `change_percent`, `source`. - `chart`: compact `[timestamp, close]` arrays. - `ohlcv`: compact `[timestamp, open, high, low, close, volume]` arrays. items: {} statistics: type: object properties: first_price: type: number last_price: type: number min_price: type: number max_price: type: number price_change: type: number price_change_percent: type: number nullable: true start_date: type: string format: date end_date: type: string format: date ErrorEnvelope: type: object required: - success - error properties: success: type: boolean const: false error: type: object required: - code - message properties: code: type: string description: Machine-readable error identifier. example: NOT_FOUND message: type: string description: Human-readable error description. example: Resource not found. required_plan: type: string description: _(PLAN_REQUIRED only)_ Minimum plan needed. current_plan: type: string description: _(PLAN_REQUIRED only)_ Your current plan. Meta: type: object description: Quota and plan metadata included on every authenticated response. properties: plan: type: string description: Current plan name. enum: - free - starter - growth - business - enterprise example: starter calls_used: type: integer description: Total calls made this calendar month across all your keys. example: 4821 calls_remaining: type: integer description: Calls remaining before your quota is exhausted. example: 95179 reset_at: type: string format: date-time description: ISO 8601 UTC timestamp of your next quota reset (1st of next month). example: '2026-05-01T00:00:00.000Z' responses: Unauthorized: description: Missing or invalid API key. content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' examples: missingKey: summary: Missing Authorization header value: success: false error: code: MISSING_API_KEY message: 'Provide your API key via: Authorization: Bearer ' invalidKey: summary: Invalid or revoked key value: success: false error: code: INVALID_API_KEY message: API key not found or revoked. PlanRequired: description: Endpoint requires a higher plan. content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' example: success: false error: code: PLAN_REQUIRED message: This endpoint requires a starter plan or higher. required_plan: starter current_plan: free QuotaExceeded: description: Monthly call limit reached. content: application/json: schema: allOf: - $ref: '#/components/schemas/ErrorEnvelope' - type: object properties: meta: $ref: '#/components/schemas/Meta' example: success: false error: code: QUOTA_EXCEEDED message: >- Monthly call limit of 100,000 reached. Resets on 2026-05-01T00:00:00.000Z. meta: plan: starter calls_used: 100000 calls_remaining: 0 reset_at: '2026-05-01T00:00:00.000Z' ServerError: description: Unexpected server-side failure. Safe to retry with backoff. content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' example: success: false error: code: SERVER_ERROR message: Something went wrong on our end. Please try again. securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: ngm_live_* description: > Pass your API key as a Bearer token: `Authorization: Bearer ngm_live_YOUR_KEY`. Generate keys at [ngnmarket.com/dashboard/developer](https://ngnmarket.com/developer). ````